[PATCH RFC 03/77] PCI/MSI/s390: Fix single MSI only check

Alexander Gordeev
2013-10-02T10:48:19Z

Multiple MSIs have never been supported on s390 architecture,
but the platform code fails to report single MSI only.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
arch/s390/pci/pci.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index f17a834..c79c6e4 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -427,6 +427,8 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
pr_debug("%s: requesting %d MSI-X interrupts...", __func__, nvec);
if (type != PCI_CAP_ID_MSIX && type != PCI_CAP_ID_MSI)
return -EINVAL;
+ if (type == PCI_CAP_ID_MSI && nvec > 1)
+ return 1;
msi_vecs = min(nvec, ZPCI_MSI_VEC_MAX);
msi_vecs = min_t(unsigned int, msi_vecs, CONFIG_PCI_NR_MSI);

--
1.7.7.6